Autopilot Operation With The Gdu 620 Emulating Gpss - Garmin G500 Cockpit Reference Manual

Autopilot Operation with GPSS
The GDU 620 processes heading and GPSS information and sends it to the
autopilot to allow the aircraft to anticipate turns and make smooth transitions
when passing waypoints.
1) Set your navigation source and HSI to the desired course.
2) Engage your autopilot in navigation mode.
3) Control your autopilot navigation through the navigation source and the HSI.
4) When GPSS mode is desired, activate GPSS on autopilot.

Autopilot Operation with the GDU 620 Emulating GPSS

NOTE: The GDU 620 has the ability to emulate GPSS roll steering for
autopilots that do not support GPSS. The GDU 620 emulates GPSS by
sending headings to the autopilot that guide turn anticipation.
1) Select GPS navigation on the HSI.
2) Set the HSI to the desired course (if in OBS mode).
3) Set the external Autopilot Heading Datum switch to GPSS.
4) Engage your autopilot in HDG mode.
NOTE: With GPSS engaged and in HDG mode, the heading bug will
not control your autopilot heading. This is annunciated next to the
HSI by the GPSS annunciation. The heading bug may still be used for
reference but the autopilot will not control the aircraft on the heading
bug.
190-01102-03 Rev C
PRIMARY FLIGHT DISPLAY (PFD)
Heading Bug Inactive Indication
GPSS Emulation Indication
G500 Cockpit Reference Guide
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